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Directive backlight stereoscopic display device based on backlight array generator

A stereoscopic display device and directional backlight technology, applied in stereoscopic systems, optics, instruments, etc., can solve problems such as difficulty in meeting the requirements for uniformity of screen brightness, and achieve improved screen brightness uniformity, light uniformity, and uniform screen display effect

Inactive Publication Date: 2018-08-17
CHANGSHU ZJU INST FOR OPTO ELECTRONICS TECH COMMLIZATION IOTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Finally, the brightness difference between the lower edge of the lens unit 121 and the upper edge of the lens unit 122 is obvious and perceived by the human eye, so the existing technology is difficult to meet the requirements of the human eye for the uniformity of the screen brightness

Method used

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  • Directive backlight stereoscopic display device based on backlight array generator
  • Directive backlight stereoscopic display device based on backlight array generator
  • Directive backlight stereoscopic display device based on backlight array generator

Examples

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Embodiment 1

[0039] Such as figure 2 as shown, figure 2 It is a top structural view of Embodiment 1 of a directional backlight stereoscopic display device based on a backlight array generator according to the present invention, including a viewpoint detection module 260, a backlight array generator 210, a linear lens array 220, a linear diffusion film 230, image display 240 . After the viewpoint detection module 260 obtains the viewpoint of the human eye, the backlight array generator 210 generates a backlight array with a specific shape and distribution by controlling the light outlet of the spatial light modulator 213, and the emitted light passes through the linear lens array 220, the linear diffusion film 230, the image Display 240 goes to set viewport unit eg 251 . The spatial light modulator 213 and the image display 240 refresh data synchronously, and through time-division multiplexing, different viewpoint units in space can display different parallax images, that is, different ...

Embodiment 2

[0052] The difference from Embodiment 1 is that the outer light-emitting surface of the backlight array generator 210, that is, the diffusion film 214 is located at the focal plane of the lens units in the linear lens array 220

Embodiment 3

[0054] see image 3 , image 3 It is a top structural view of Embodiment 3 of a directional backlight stereoscopic display device based on a backlight array generator of the present invention. The difference between Example 1 and Example 3 is that image 3 Each of the light source units 211A- 211B in the light source array 211 shown is composed of two independent light sources, and the light sources are separated on both sides of the symmetry axis of the field mirror unit. The light received by the linear lens array unit such as 221 is from the superposition of the light energy distribution of the two LEDs in the light source unit 211A, so the light energy received by the linear lens array unit such as 211 is compared with figure 2 The structure shown is more uniform.

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Abstract

The invention discloses a directive backlight stereoscopic display device based on a backlight array generator, and the device comprises a view point detection module, the backlight array generator, alinear lens array, a linear diffusion film, and an image display. The backlight array generator sequentially comprises a light source array, a field mirror array, a spatial light modulator and a diffusion film, and is used for generating backlight array units in a specific shape and distribution. The linear lens array is used for gathering the light of the backlight array to a set view region unit. After the view point detection module obtains a view point of human eyes, the light generated by the backlight array generator sequentially passes through the linear lens array, the linear diffusion film and the image display to be gathered to the set view region unit. The backlight array generator and the image display carry out the synchronous refreshing. The device can achieve a purpose thatdifferent view point units receive different parallax images in a space through time division multiplexing. The device can iron out the defect that the image brightness uniformity of an existing directive backlight stereoscopic display device is poorer.

Description

technical field [0001] The invention belongs to the field of image display, in particular to a backlight directivity stereoscopic display device. Background technique [0002] 3D display technology is the mainstream display direction in the future, and the most widely used is the stereoscopic display method based on parallax images. The left eye and the right eye are located at different positions in space. With the help of some methods, the left eye only receives the parallax image corresponding to the left eye, and the right eye only receives the parallax image corresponding to the right eye, and 3D stereoscopic information is obtained through brain fusion. [0003] Glasses-free 3D display technology is a technology that allows viewers to perceive image depth information without wearing vision aids. At present, the mainstream implementation technologies mainly include cylindrical lens array, visual barrier grating and directional backlight technology. The 3D display devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/22H04N13/305H04N13/32
CPCG02B30/27
Inventor 何赛灵余文涛
Owner CHANGSHU ZJU INST FOR OPTO ELECTRONICS TECH COMMLIZATION IOTEC